I came to celebrate my anniversary. Dropped $150 on our tab. It was lunch, the rice was cold. Our server never checked in after she dropped off the food. The place was dead. The floors haven’t been vacuumed in ages either. Definitely not worth the value for the price.
Atmosphere: 3
Food: 3
Service: 3
Robert Seida
Happy Sumo in Thornton is a welcome change from the usual paper-and-pencil sushi routine. It has more of an upscale, sit-down feel without losing the casual comfort that makes sushi dining enjoyable. The food itself was solid across the board. The fish on the Nigiri came out a touch warmer than expected, but it was undeniably fresh and the portions were generous. Each piece of Nigiri had a well-balanced cut of fish and a proper mound of rice—not skimpy, not overdone. We went with the chef’s pick option, which turned out to be a fun experience with thoughtful selections that highlighted a good range of the menu. The tempura-fried roll stood out: crisp on the outside, flavorful inside, and not greasy at all. If you’re after a quieter, more polished sushi experience where the focus is on quality and presentation rather than speed or novelty, this spot hits that mark. It’s a place to relax and enjoy good sushi without the chaos that comes with more crowded sushi bars.
Atmosphere: 5
Food: 5
Service: 4
Christian Saint
I ordered pickup through doordash. Freshness was good, but overall I was underwhelmed. Portion sizes felt small for the price, and the Philly roll description on DoorDash was wrong — it didn’t come with spicy mayo or eel sauce, which I was really looking forward to, cause you usually dont see that. I’m also a sauce guy, so that was disappointing. The amount of ginger was tiny; I ran out before finishing even half of the three rolls I ordered. The Philly roll tasted fine but I’ve had better, and the yellowtail had a minced texture I didn’t enjoy. Not terrible, just not great — I’d probably order elsewhere next time personally. But that's mainly based on wrong descriptions, and small portion sizes.
Atmosphere: 5
Food: 3
Service: 5
April Bateman
Slow service and order was not right.
Atmosphere: 4
Food: 4
Service: 4
Al P
We came here for the first time. Upon entering it smelled off and slightly moldy. It was very dark and impossible to see the interior or the food. Our server did not know the menu or the sake choices. We had sashimi which was ok. Followed by sushi rolls, which were not great and not fresh. We also ordered the chicken bento box which was blah and chewy. And the Szechwan beef, which arrived drowning in sauce and tasted like rubber. After eating the beef, we asked for a to go box and upon putting our leftovers into the to go box, we realized that we had all eaten a doily. When we asked to speak to a manager, she was hostile and completely unprofessional. She left us sitting there as they were closing for at least 20 minutes and then refused to do anything about the fact that we had all ingested the plastic covered paper doily. When I said that I did not feel like I should have to pay for that entrée, she threatened to call the police. We paid $135.20 and left, not to return. I did ask to speak with the owner and the manager said they are never there. We left feeling grossed out!
Atmosphere: 1
Food: 2
Service: 1
Matt Purswell
The quality of the sushi is very low. Of the 4 rolls I got, all tasted very bland. The mango roll, I’m not even sure it was real mango, was very tasteless. The rice was not sticky and every piece I picked up would fall apart. There are better sushi places within 10 min drive. I won’t be going back here
Atmosphere: 5
Food: 1
Service: 5
Brianna Windholz
Server was far from friendly. Food was great though
Atmosphere: 3
Food: 5
Service: 2
Emma Lopez
The salad that came with my bento box was really good, and the sushi was great
Atmosphere: 3
Food: 5
Service: 4
Harrison Levicky
Came here earlier with my wife and from the moment we stepped in the place was super dirty like the floors hadn't been cleaned since the place opened. I took 3 bites of my combo bowl and my wife took one bite of her salad and we both agreed it was disgusting and we both felt extremely ill after about an hour or so. To top it off we were like 1 of 4 tables I could see dining and service was super slow.
I hate to be rude, but this was probably the worst restaurant I've been to in my life and this place deserves the negative feedback. I have no clue how you're still in business or what I just consumed.
Atmosphere: 1
Food: 1
Service: 1
Katie Giese
Overall the restaurant was really dirty. Right from when you walk in the door it looked like the floors hadn't been cleaned or swept in months. The tables, menus, and dishes were dirty as well. We got crispy rice as an appetizer which tasted fine but did not seem fresh. Both mine and my husbands entrees did not seem fresh either and tasted pretty bad as well. Service was fine but the lack of cleanliness and quality of food were really off-putting. By the time we finished our shopping and drove home we both got sick.
Needs a deep clean, waitstaff were super checked out, someone’s on the staffs snacks were left out for all to see. Pricing doesn’t match low quality of food.
Atmosphere: 2
Food: 2
Service: 1
Marcus Gustafsson
My favorite sushi place in the nation!
Atmosphere: 5
Food: 5
Service: 5
Claudia Felix
Great Service, great food.
Atmosphere: 5
Food: 5
Service: 5
Ji Uw
TAKEOUT BEWARE when you call to make a pickup order, they ask you to pay with a card over the phone. At the end they will ask if you want to leave a tip. The issue is once you get to the restaurant, they hand you a receipt to sign and ask for another tip on top of what you’ve already left. There’s no where on your receipt that says you’ve already left a tip, they are basically asking you to double tip them.
Kinda shitty if you ask me
Atmosphere: 3
Food: 5
Service: 2
Cecilia B
Definitely be back!! Great atmosphere! Had an amazing time with co workers.
I came to celebrate my anniversary. Dropped $150 on our tab. It was lunch, the rice was cold. Our server never checked in after she dropped off the food. The place was dead. The floors haven’t been vacuumed in ages either. Definitely not worth the value for the price.
Atmosphere: 3
Food: 3
Service: 3
Happy Sumo in Thornton is a welcome change from the usual paper-and-pencil sushi routine. It has more of an upscale, sit-down feel without losing the casual comfort that makes sushi dining enjoyable. The food itself was solid across the board. The fish on the Nigiri came out a touch warmer than expected, but it was undeniably fresh and the portions were generous. Each piece of Nigiri had a well-balanced cut of fish and a proper mound of rice—not skimpy, not overdone.
We went with the chef’s pick option, which turned out to be a fun experience with thoughtful selections that highlighted a good range of the menu. The tempura-fried roll stood out: crisp on the outside, flavorful inside, and not greasy at all.
If you’re after a quieter, more polished sushi experience where the focus is on quality and presentation rather than speed or novelty, this spot hits that mark. It’s a place to relax and enjoy good sushi without the chaos that comes with more crowded sushi bars.
Atmosphere: 5
Food: 5
Service: 4
I ordered pickup through doordash. Freshness was good, but overall I was underwhelmed. Portion sizes felt small for the price, and the Philly roll description on DoorDash was wrong — it didn’t come with spicy mayo or eel sauce, which I was really looking forward to, cause you usually dont see that. I’m also a sauce guy, so that was disappointing. The amount of ginger was tiny; I ran out before finishing even half of the three rolls I ordered. The Philly roll tasted fine but I’ve had better, and the yellowtail had a minced texture I didn’t enjoy. Not terrible, just not great — I’d probably order elsewhere next time personally. But that's mainly based on wrong descriptions, and small portion sizes.
Atmosphere: 5
Food: 3
Service: 5
Slow service and order was not right.
Atmosphere: 4
Food: 4
Service: 4
We came here for the first time. Upon entering it smelled off and slightly moldy. It was very dark and impossible to see the interior or the food. Our server did not know the menu or the sake choices. We had sashimi which was ok. Followed by sushi rolls, which were not great and not fresh. We also ordered the chicken bento box which was blah and chewy. And the Szechwan beef, which arrived drowning in sauce and tasted like rubber. After eating the beef, we asked for a to go box and upon putting our leftovers into the to go box, we realized that we had all eaten a doily. When we asked to speak to a manager, she was hostile and completely unprofessional. She left us sitting there as they were closing for at least 20 minutes and then refused to do anything about the fact that we had all ingested the plastic covered paper doily. When I said that I did not feel like I should have to pay for that entrée, she threatened to call the police. We paid $135.20 and left, not to return. I did ask to speak with the owner and the manager said they are never there. We left feeling grossed out!
Atmosphere: 1
Food: 2
Service: 1
The quality of the sushi is very low. Of the 4 rolls I got, all tasted very bland. The mango roll, I’m not even sure it was real mango, was very tasteless. The rice was not sticky and every piece I picked up would fall apart. There are better sushi places within 10 min drive. I won’t be going back here
Atmosphere: 5
Food: 1
Service: 5
Server was far from friendly. Food was great though
Atmosphere: 3
Food: 5
Service: 2
The salad that came with my bento box was really good, and the sushi was great
Atmosphere: 3
Food: 5
Service: 4
Came here earlier with my wife and from the moment we stepped in the place was super dirty like the floors hadn't been cleaned since the place opened. I took 3 bites of my combo bowl and my wife took one bite of her salad and we both agreed it was disgusting and we both felt extremely ill after about an hour or so. To top it off we were like 1 of 4 tables I could see dining and service was super slow.
I hate to be rude, but this was probably the worst restaurant I've been to in my life and this place deserves the negative feedback. I have no clue how you're still in business or what I just consumed.
Atmosphere: 1
Food: 1
Service: 1
Overall the restaurant was really dirty. Right from when you walk in the door it looked like the floors hadn't been cleaned or swept in months. The tables, menus, and dishes were dirty as well. We got crispy rice as an appetizer which tasted fine but did not seem fresh. Both mine and my husbands entrees did not seem fresh either and tasted pretty bad as well. Service was fine but the lack of cleanliness and quality of food were really off-putting. By the time we finished our shopping and drove home we both got sick.
Atmosphere: 1
Food: 1
Service: 2
Restaurantji Recommends
Needs a deep clean, waitstaff were super checked out, someone’s on the staffs snacks were left out for all to see.
Pricing doesn’t match low quality of food.
Atmosphere: 2
Food: 2
Service: 1
My favorite sushi place in the nation!
Atmosphere: 5
Food: 5
Service: 5
Great Service, great food.
Atmosphere: 5
Food: 5
Service: 5
TAKEOUT BEWARE
when you call to make a pickup order, they ask you to pay with a card over the phone. At the end they will ask if you want to leave a tip.
The issue is once you get to the restaurant, they hand you a receipt to sign and ask for another tip on top of what you’ve already left. There’s no where on your receipt that says you’ve already left a tip, they are basically asking you to double tip them.
Kinda shitty if you ask me
Atmosphere: 3
Food: 5
Service: 2
Definitely be back!! Great atmosphere! Had an amazing time with co workers.
Atmosphere: 5
Food: 5
Service: 5
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